replace request with node-fetch, fix getHealthCheckInfo false positive tests

[spencerkordecki]

Description

• Replaces request with node-fetch due to request being deprecated (see: Request’s Past, Present and Future request/request#3142)
• Fixes getHealthCheckInfo tests by fixing casing of the mock data to fix the silently failing tests
• Removes comma dangle as default setting in prettier due to upgrade to Prettier 2.X

Related Issues

Implements #332

Checklist:

• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you linted your code locally prior to submission?
• Have you successfully ran tests with your changes locally?

[codecov]

Codecov Report

Merging #347 into master will decrease coverage by 4.60%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #347      +/-   ##
==========================================
- Coverage   82.80%   78.20%   -4.61%     
==========================================
  Files          23       23              
  Lines         221      234      +13     
  Branches       19       21       +2     
==========================================
  Hits          183      183              
- Misses         38       51      +13     

Impacted Files	Coverage Δ
src/api/load-balancer.js	100.00% <ø> (ø)
src/util.js	4.16% <0.00%> (-4.93%)	⬇️

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[ddymko]

Closes #332